A scene from the children's online multiplayer game "Pirate 101." (credit: KingsIsle Entertainment)

NEW YORK (AP) - For one online game maker, pirates evolved from wizards.

KingsIsle Entertainment, the maker of a popular multiplayer game for kids, is unveiling its second title, “Pirate 101,” on Wednesday. It’s a world of floating ships and do-gooder pirates inspired by its other game, “Wizard 101.”

The games are free to play. KingsIsle Entertainment, which is based in Plano, makes money by charging fees for optional, virtual items that enhance game play. That strategy has proven lucrative for the newest generation of game companies, notably Zynga, whose games are played mainly on Facebook.

“Wizard 101″ has 25 million players and is launching in China this year. “Pirate 101″ is currently being tested. It will be available to the general public later this year.